5
AssignmentMultiple Choice

Atomic Theory

Question 5 • GA-GSE Physical Science A

What did Ernest Rutherford expect to happen when he aimed a beam of particles at a thin gold foil?

Answer
A
The particles would deflect at sharp angles or completely back toward the emitter.
B
The particles would pass through the foil undisturbed.
C
The particles would deflect at right angles after hitting the foil.
D
The particles would be deflected slightly after passing through the foil.

Explanation

Rutherford expected the atom’s positive charge to be spread out, so alpha particles should encounter only a weak force as they passed through the thin gold foil. He therefore predicted that they would be deflected only slightly. The correct choice is “The particles would be deflected slightly after passing through the foil.”

AI-written and checked against the verified answer.

Previous
Next